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TARGET_EFM32LG_STK3600/TARGET_Silicon_Labs/TARGET_EFM32/emlib/inc/em_ldma.h
- Committer:
- Kojto
- Date:
- 2016-02-02
- Revision:
- 113:f141b2784e32
- Child:
- 128:9bcdf88f62b0
File content as of revision 113:f141b2784e32:
/***************************************************************************//** * @file em_ldma.h * @brief Direct memory access (LDMA) API * @version 4.2.1 ******************************************************************************* * @section License * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b> ******************************************************************************* * * Permission is granted to anyone to use this software for any purpose, * including commercial applications, and to alter it and redistribute it * freely, subject to the following restrictions: * * 1. The origin of this software must not be misrepresented; you must not * claim that you wrote the original software.@n * 2. Altered source versions must be plainly marked as such, and must not be * misrepresented as being the original software.@n * 3. This notice may not be removed or altered from any source distribution. * * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no * obligation to support this Software. Silicon Labs is providing the * Software "AS IS", with no express or implied warranties of any kind, * including, but not limited to, any implied warranties of merchantability * or fitness for any particular purpose or warranties against infringement * of any proprietary rights of a third party. * * Silicon Labs will not be liable for any consequential, incidental, or * special damages, or any other relief, or for any claim by any third party, * arising from your use of this Software. * ******************************************************************************/ #ifndef __SILICON_LABS_EM_LDMA_H__ #define __SILICON_LABS_EM_LDMA_H__ #include "em_device.h" #if defined( LDMA_PRESENT ) && ( LDMA_COUNT == 1 ) #include <stdbool.h> #ifdef __cplusplus extern "C" { #endif /***************************************************************************//** * @addtogroup EM_Library * @{ ******************************************************************************/ /***************************************************************************//** * @addtogroup LDMA * @{ ******************************************************************************/ /******************************************************************************* ******************************** ENUMS ************************************ ******************************************************************************/ /** * This value controls the number of unit data transfers per arbitration * cycle, providing a means to balance DMA channels' load on the controller. */ typedef enum { ldmaCtrlBlockSizeUnit1 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT1, /**< One transfer per arbitration. */ ldmaCtrlBlockSizeUnit2 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT2, /**< Two transfers per arbitration. */ ldmaCtrlBlockSizeUnit3 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT3, /**< Three transfers per arbitration. */ ldmaCtrlBlockSizeUnit4 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT4, /**< Four transfers per arbitration. */ ldmaCtrlBlockSizeUnit6 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT6, /**< Six transfers per arbitration. */ ldmaCtrlBlockSizeUnit8 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT8, /**< Eight transfers per arbitration. */ ldmaCtrlBlockSizeUnit16 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT16, /**< 16 transfers per arbitration. */ ldmaCtrlBlockSizeUnit32 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT32, /**< 32 transfers per arbitration. */ ldmaCtrlBlockSizeUnit64 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT64, /**< 64 transfers per arbitration. */ ldmaCtrlBlockSizeUnit128 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT128, /**< 128 transfers per arbitration. */ ldmaCtrlBlockSizeUnit256 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT256, /**< 256 transfers per arbitration. */ ldmaCtrlBlockSizeUnit512 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT512, /**< 512 transfers per arbitration. */ ldmaCtrlBlockSizeUnit1024 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT1024, /**< 1024 transfers per arbitration. */ ldmaCtrlBlockSizeAll = _LDMA_CH_CTRL_BLOCKSIZE_ALL /**< Lock arbitration during transfer. */ } LDMA_CtrlBlockSize_t; /** DMA structure type. */ typedef enum { ldmaCtrlStructTypeXfer = _LDMA_CH_CTRL_STRUCTTYPE_TRANSFER, /**< TRANSFER transfer type. */ ldmaCtrlStructTypeSync = _LDMA_CH_CTRL_STRUCTTYPE_SYNCHRONIZE, /**< SYNCHRONIZE transfer type. */ ldmaCtrlStructTypeWrite = _LDMA_CH_CTRL_STRUCTTYPE_WRITE /**< WRITE transfer type. */ } LDMA_CtrlStructType_t; /** DMA transfer block or cycle selector. */ typedef enum { ldmaCtrlReqModeBlock = _LDMA_CH_CTRL_REQMODE_BLOCK, /**< Each DMA request trigger transfer of one block. */ ldmaCtrlReqModeAll = _LDMA_CH_CTRL_REQMODE_ALL /**< A DMA request trigger transfer of a complete cycle. */ } LDMA_CtrlReqMode_t; /** Source address increment unit size. */ typedef enum { ldmaCtrlSrcIncOne = _LDMA_CH_CTRL_SRCINC_ONE, /**< Increment source address by one unit data size. */ ldmaCtrlSrcIncTwo = _LDMA_CH_CTRL_SRCINC_TWO, /**< Increment source address by two unit data sizes. */ ldmaCtrlSrcIncFour = _LDMA_CH_CTRL_SRCINC_FOUR, /**< Increment source address by four unit data sizes. */ ldmaCtrlSrcIncNone = _LDMA_CH_CTRL_SRCINC_NONE /**< Do not increment the source address. */ } LDMA_CtrlSrcInc_t; /** DMA transfer unit size. */ typedef enum { ldmaCtrlSizeByte = _LDMA_CH_CTRL_SIZE_BYTE, /**< Each unit transfer is a byte. */ ldmaCtrlSizeHalf = _LDMA_CH_CTRL_SIZE_HALFWORD, /**< Each unit transfer is a half-word. */ ldmaCtrlSizeWord = _LDMA_CH_CTRL_SIZE_WORD /**< Each unit transfer is a word. */ } LDMA_CtrlSize_t; /** Destination address increment unit size. */ typedef enum { ldmaCtrlDstIncOne = _LDMA_CH_CTRL_DSTINC_ONE, /**< Increment destination address by one unit data size. */ ldmaCtrlDstIncTwo = _LDMA_CH_CTRL_DSTINC_TWO, /**< Increment destination address by two unit data sizes. */ ldmaCtrlDstIncFour = _LDMA_CH_CTRL_DSTINC_FOUR, /**< Increment destination address by four unit data sizes. */ ldmaCtrlDstIncNone = _LDMA_CH_CTRL_DSTINC_NONE /**< Do not increment the destination address. */ } LDMA_CtrlDstInc_t; /** Source addressing mode. */ typedef enum { ldmaCtrlSrcAddrModeAbs = _LDMA_CH_CTRL_SRCMODE_ABSOLUTE, /**< Address fetched from a linked structure is absolute. */ ldmaCtrlSrcAddrModeRel = _LDMA_CH_CTRL_SRCMODE_RELATIVE /**< Address fetched from a linked structure is relative. */ } LDMA_CtrlSrcAddrMode_t; /** Destination addressing mode. */ typedef enum { ldmaCtrlDstAddrModeAbs = _LDMA_CH_CTRL_DSTMODE_ABSOLUTE, /**< Address fetched from a linked structure is absolute. */ ldmaCtrlDstAddrModeRel = _LDMA_CH_CTRL_DSTMODE_RELATIVE /**< Address fetched from a linked structure is relative. */ } LDMA_CtrlDstAddrMode_t; /** DMA linkload address mode. */ typedef enum { ldmaLinkModeAbs = _LDMA_CH_LINK_LINKMODE_ABSOLUTE, /**< Link address is an absolute address value. */ ldmaLinkModeRel = _LDMA_CH_LINK_LINKMODE_RELATIVE /**< Link address is a two's complement releative address. */ } LDMA_LinkMode_t; /** Insert extra arbitration slots to increase channel arbitration priority. */ typedef enum { ldmaCfgArbSlotsAs1 = _LDMA_CH_CFG_ARBSLOTS_ONE, /**< One arbitration slot selected. */ ldmaCfgArbSlotsAs2 = _LDMA_CH_CFG_ARBSLOTS_TWO, /**< Two arbitration slots selected. */ ldmaCfgArbSlotsAs4 = _LDMA_CH_CFG_ARBSLOTS_FOUR, /**< Four arbitration slots selected. */ ldmaCfgArbSlotsAs8 = _LDMA_CH_CFG_ARBSLOTS_EIGHT /**< Eight arbitration slots selected. */ } LDMA_CfgArbSlots_t; /** Source address increment sign. */ typedef enum { ldmaCfgSrcIncSignPos = _LDMA_CH_CFG_SRCINCSIGN_POSITIVE, /**< Increment source address. */ ldmaCfgSrcIncSignNeg = _LDMA_CH_CFG_SRCINCSIGN_NEGATIVE /**< Decrement source address. */ } LDMA_CfgSrcIncSign_t; /** Destination address increment sign. */ typedef enum { ldmaCfgDstIncSignPos = _LDMA_CH_CFG_DSTINCSIGN_POSITIVE, /**< Increment destination address. */ ldmaCfgDstIncSignNeg = _LDMA_CH_CFG_DSTINCSIGN_NEGATIVE /**< Decrement destination address. */ } LDMA_CfgDstIncSign_t; /** Peripherals that can trigger LDMA transfers. */ typedef enum { ldmaPeripheralSignal_NONE = LDMA_CH_REQSEL_SOURCESEL_NONE, ///< No peripheral selected for DMA triggering. #if defined( LDMA_CH_REQSEL_SIGSEL_ADC0SCAN ) ldmaPeripheralSignal_ADC0_SCAN = LDMA_CH_REQSEL_SIGSEL_ADC0SCAN | LDMA_CH_REQSEL_SOURCESEL_ADC0, ///< Trig on ADC0_SCAN. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_ADC0SINGLE ) ldmaPeripheralSignal_ADC0_SINGLE = LDMA_CH_REQSEL_SIGSEL_ADC0SINGLE | LDMA_CH_REQSEL_SOURCESEL_ADC0, ///< Trig on ADC0_SINGLE. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_AGCRSSI ) ldmaPeripheralSignal_AGC_RSSI = LDMA_CH_REQSEL_SIGSEL_AGCRSSI | LDMA_CH_REQSEL_SOURCESEL_AGC, ///< Trig on AGC_RSSI. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_CRYPTODATA0RD ) ldmaPeripheralSignal_CRYPTO_DATA0RD = LDMA_CH_REQSEL_SIGSEL_CRYPTODATA0RD | LDMA_CH_REQSEL_SOURCESEL_CRYPTO, ///< Trig on CRYPTO_DATA0RD. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_CRYPTODATA0WR ) ldmaPeripheralSignal_CRYPTO_DATA0WR = LDMA_CH_REQSEL_SIGSEL_CRYPTODATA0WR | LDMA_CH_REQSEL_SOURCESEL_CRYPTO, ///< Trig on CRYPTO_DATA0WR. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_CRYPTODATA0XWR ) ldmaPeripheralSignal_CRYPTO_DATA0XWR = LDMA_CH_REQSEL_SIGSEL_CRYPTODATA0XWR | LDMA_CH_REQSEL_SOURCESEL_CRYPTO, ///< Trig on CRYPTO_DATA0XWR. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_CRYPTODATA1RD ) ldmaPeripheralSignal_CRYPTO_DATA1RD = LDMA_CH_REQSEL_SIGSEL_CRYPTODATA1RD | LDMA_CH_REQSEL_SOURCESEL_CRYPTO, ///< Trig on CRYPTO_DATA1RD. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_CRYPTODATA1WR ) ldmaPeripheralSignal_CRYPTO_DATA1WR = LDMA_CH_REQSEL_SIGSEL_CRYPTODATA1WR | LDMA_CH_REQSEL_SOURCESEL_CRYPTO, ///< Trig on CRYPTO_DATA1WR. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_I2C0RXDATAV ) ldmaPeripheralSignal_I2C0_RXDATAV = LDMA_CH_REQSEL_SIGSEL_I2C0RXDATAV | LDMA_CH_REQSEL_SOURCESEL_I2C0, ///< Trig on I2C0_RXDATAV. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_I2C0TXBL ) ldmaPeripheralSignal_I2C0_TXBL = LDMA_CH_REQSEL_SIGSEL_I2C0TXBL | LDMA_CH_REQSEL_SOURCESEL_I2C0, ///< Trig on I2C0_TXBL. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_LEUART0RXDATAV ) ldmaPeripheralSignal_LEUART0_RXDATAV = LDMA_CH_REQSEL_SIGSEL_LEUART0RXDATAV | LDMA_CH_REQSEL_SOURCESEL_LEUART0, ///< Trig on LEUART0_RXDATAV. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_LEUART0TXBL ) ldmaPeripheralSignal_LEUART0_TXBL = LDMA_CH_REQSEL_SIGSEL_LEUART0TXBL | LDMA_CH_REQSEL_SOURCESEL_LEUART0, ///< Trig on LEUART0_TXBL. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_LEUART0TXEMPTY ) ldmaPeripheralSignal_LEUART0_TXEMPTY = LDMA_CH_REQSEL_SIGSEL_LEUART0TXEMPTY | LDMA_CH_REQSEL_SOURCESEL_LEUART0, ///< Trig on LEUART0_TXEMPTY. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_MODEMDEBUG ) ldmaPeripheralSignal_MODEM_DEBUG = LDMA_CH_REQSEL_SIGSEL_MODEMDEBUG | LDMA_CH_REQSEL_SOURCESEL_MODEM, ///< Trig on MODEM_DEBUG. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_MSCWDATA ) ldmaPeripheralSignal_MSC_WDATA = LDMA_CH_REQSEL_SIGSEL_MSCWDATA | LDMA_CH_REQSEL_SOURCESEL_MSC, ///< Trig on MSC_WDATA. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_PROTIMERBOF ) ldmaPeripheralSignal_PROTIMER_BOF = LDMA_CH_REQSEL_SIGSEL_PROTIMERBOF | LDMA_CH_REQSEL_SOURCESEL_PROTIMER, ///< Trig on PROTIMER_BOF. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_PROTIMERCC0 ) ldmaPeripheralSignal_PROTIMER_CC0 = LDMA_CH_REQSEL_SIGSEL_PROTIMERCC0 | LDMA_CH_REQSEL_SOURCESEL_PROTIMER, ///< Trig on PROTIMER_CC0. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_PROTIMERCC1 ) ldmaPeripheralSignal_PROTIMER_CC1 = LDMA_CH_REQSEL_SIGSEL_PROTIMERCC1 | LDMA_CH_REQSEL_SOURCESEL_PROTIMER, ///< Trig on PROTIMER_CC1. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_PROTIMERCC2 ) ldmaPeripheralSignal_PROTIMER_CC2 = LDMA_CH_REQSEL_SIGSEL_PROTIMERCC2 | LDMA_CH_REQSEL_SOURCESEL_PROTIMER, ///< Trig on PROTIMER_CC2. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_PROTIMERCC3 ) ldmaPeripheralSignal_PROTIMER_CC3 = LDMA_CH_REQSEL_SIGSEL_PROTIMERCC3 | LDMA_CH_REQSEL_SOURCESEL_PROTIMER, ///< Trig on PROTIMER_CC3. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_PROTIMERCC4 ) ldmaPeripheralSignal_PROTIMER_CC4 = LDMA_CH_REQSEL_SIGSEL_PROTIMERCC4 | LDMA_CH_REQSEL_SOURCESEL_PROTIMER, ///< Trig on PROTIMER_CC4. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_PROTIMERPOF ) ldmaPeripheralSignal_PROTIMER_POF = LDMA_CH_REQSEL_SIGSEL_PROTIMERPOF | LDMA_CH_REQSEL_SOURCESEL_PROTIMER, ///< Trig on PROTIMER_POF. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_PROTIMERWOF ) ldmaPeripheralSignal_PROTIMER_WOF = LDMA_CH_REQSEL_SIGSEL_PROTIMERWOF | LDMA_CH_REQSEL_SOURCESEL_PROTIMER, ///< Trig on PROTIMER_WOF. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_PRSREQ0 ) ldmaPeripheralSignal_PRS_REQ0 = LDMA_CH_REQSEL_SIGSEL_PRSREQ0 | LDMA_CH_REQSEL_SOURCESEL_PRS, ///< Trig on PRS_REQ0. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_PRSREQ1 ) ldmaPeripheralSignal_PRS_REQ1 = LDMA_CH_REQSEL_SIGSEL_PRSREQ1 | LDMA_CH_REQSEL_SOURCESEL_PRS, ///< Trig on PRS_REQ1. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_TIMER0CC0 ) ldmaPeripheralSignal_TIMER0_CC0 = LDMA_CH_REQSEL_SIGSEL_TIMER0CC0 | LDMA_CH_REQSEL_SOURCESEL_TIMER0, ///< Trig on TIMER0_CC0. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_TIMER0CC1 ) ldmaPeripheralSignal_TIMER0_CC1 = LDMA_CH_REQSEL_SIGSEL_TIMER0CC1 | LDMA_CH_REQSEL_SOURCESEL_TIMER0, ///< Trig on TIMER0_CC1. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_TIMER0CC2 ) ldmaPeripheralSignal_TIMER0_CC2 = LDMA_CH_REQSEL_SIGSEL_TIMER0CC2 | LDMA_CH_REQSEL_SOURCESEL_TIMER0, ///< Trig on TIMER0_CC2. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_TIMER0UFOF ) ldmaPeripheralSignal_TIMER0_UFOF = LDMA_CH_REQSEL_SIGSEL_TIMER0UFOF | LDMA_CH_REQSEL_SOURCESEL_TIMER0, ///< Trig on TIMER0_UFOF. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_TIMER1CC0 ) ldmaPeripheralSignal_TIMER1_CC0 = LDMA_CH_REQSEL_SIGSEL_TIMER1CC0 | LDMA_CH_REQSEL_SOURCESEL_TIMER1, ///< Trig on TIMER1_CC0. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_TIMER1CC1 ) ldmaPeripheralSignal_TIMER1_CC1 = LDMA_CH_REQSEL_SIGSEL_TIMER1CC1 | LDMA_CH_REQSEL_SOURCESEL_TIMER1, ///< Trig on TIMER1_CC1. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_TIMER1CC2 ) ldmaPeripheralSignal_TIMER1_CC2 = LDMA_CH_REQSEL_SIGSEL_TIMER1CC2 | LDMA_CH_REQSEL_SOURCESEL_TIMER1, ///< Trig on TIMER1_CC2. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_TIMER1CC3 ) ldmaPeripheralSignal_TIMER1_CC3 = LDMA_CH_REQSEL_SIGSEL_TIMER1CC3 | LDMA_CH_REQSEL_SOURCESEL_TIMER1, ///< Trig on TIMER1_CC3. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_TIMER1UFOF ) ldmaPeripheralSignal_TIMER1_UFOF = LDMA_CH_REQSEL_SIGSEL_TIMER1UFOF | LDMA_CH_REQSEL_SOURCESEL_TIMER1, ///< Trig on TIMER1_UFOF. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_USART0RXDATAV ) ldmaPeripheralSignal_USART0_RXDATAV = LDMA_CH_REQSEL_SIGSEL_USART0RXDATAV | LDMA_CH_REQSEL_SOURCESEL_USART0, ///< Trig on USART0_RXDATAV. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_USART0TXBL ) ldmaPeripheralSignal_USART0_TXBL = LDMA_CH_REQSEL_SIGSEL_USART0TXBL | LDMA_CH_REQSEL_SOURCESEL_USART0, ///< Trig on USART0_TXBL. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_USART0TXEMPTY ) ldmaPeripheralSignal_USART0_TXEMPTY = LDMA_CH_REQSEL_SIGSEL_USART0TXEMPTY | LDMA_CH_REQSEL_SOURCESEL_USART0, ///< Trig on USART0_TXEMPTY. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_USART1RXDATAV ) ldmaPeripheralSignal_USART1_RXDATAV = LDMA_CH_REQSEL_SIGSEL_USART1RXDATAV | LDMA_CH_REQSEL_SOURCESEL_USART1, ///< Trig on USART1_RXDATAV. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_USART1RXDATAVRIGHT ) ldmaPeripheralSignal_USART1_RXDATAVRIGHT = LDMA_CH_REQSEL_SIGSEL_USART1RXDATAVRIGHT | LDMA_CH_REQSEL_SOURCESEL_USART1, ///< Trig on USART1_RXDATAVRIGHT. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_USART1TXBL ) ldmaPeripheralSignal_USART1_TXBL = LDMA_CH_REQSEL_SIGSEL_USART1TXBL | LDMA_CH_REQSEL_SOURCESEL_USART1, ///< Trig on USART1_TXBL. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_USART1TXBLRIGHT ) ldmaPeripheralSignal_USART1_TXBLRIGHT = LDMA_CH_REQSEL_SIGSEL_USART1TXBLRIGHT | LDMA_CH_REQSEL_SOURCESEL_USART1, ///< Trig on USART1_TXBLRIGHT. #endif #if defined( LDMA_CH_REQSEL_SIGSEL_USART1TXEMPTY ) ldmaPeripheralSignal_USART1_TXEMPTY = LDMA_CH_REQSEL_SIGSEL_USART1TXEMPTY | LDMA_CH_REQSEL_SOURCESEL_USART1 ///< Trig on USART1_TXEMPTY. #endif } LDMA_PeripheralSignal_t; /******************************************************************************* ******************************* STRUCTS *********************************** ******************************************************************************/ /** * @brief * DMA descriptor. * @details * The LDMA DMA controller supports three different DMA descriptors. Each * consist of four WORD's which map directly onto hw control registers for a * given DMA channel. The three descriptor types are XFER, SYNC and WRI. * Refer to the reference manual for further information. */ typedef union { /** * TRANSFER DMA descriptor, this is the only descriptor type which can be * used to start a DMA transfer. */ struct { uint32_t structType : 2; /**< Set to 0 to select XFER descriptor type. */ uint32_t reserved0 : 1; uint32_t structReq : 1; /**< DMA transfer trigger during LINKLOAD. */ uint32_t xferCnt : 11; /**< Transfer count minus one. */ uint32_t byteSwap : 1; /**< Enable byte swapping transfers. */ uint32_t blockSize : 4; /**< Number of unit transfers per arb. cycle. */ uint32_t doneIfs : 1; /**< Generate interrupt when done. */ uint32_t reqMode : 1; /**< Block or cycle transfer selector. */ uint32_t decLoopCnt : 1; /**< Enable looped transfers. */ uint32_t ignoreSrec : 1; /**< Ignore single requests. */ uint32_t srcInc : 2; /**< Source address increment unit size. */ uint32_t size : 2; /**< DMA transfer unit size. */ uint32_t dstInc : 2; /**< Destination address increment unit size. */ uint32_t srcAddrMode: 1; /**< Source addressing mode. */ uint32_t dstAddrMode: 1; /**< Destination addressing mode. */ uint32_t srcAddr; /**< DMA source address. */ uint32_t dstAddr; /**< DMA destination address. */ uint32_t linkMode : 1; /**< Select absolute or relative link address.*/ uint32_t link : 1; /**< Enable LINKLOAD when transfer is done. */ int32_t linkAddr : 30; /**< Address of next (linked) descriptor. */ } xfer; /** SYNCHRONIZE DMA descriptor, used for intra channel transfer * syncronization. */ struct { uint32_t structType : 2; /**< Set to 1 to select SYNC descriptor type. */ uint32_t reserved0 : 1; uint32_t structReq : 1; /**< DMA transfer trigger during LINKLOAD. */ uint32_t xferCnt : 11; /**< Transfer count minus one. */ uint32_t byteSwap : 1; /**< Enable byte swapping transfers. */ uint32_t blockSize : 4; /**< Number of unit transfers per arb. cycle. */ uint32_t doneIfs : 1; /**< Generate interrupt when done. */ uint32_t reqMode : 1; /**< Block or cycle transfer selector. */ uint32_t decLoopCnt : 1; /**< Enable looped transfers. */ uint32_t ignoreSrec : 1; /**< Ignore single requests. */ uint32_t srcInc : 2; /**< Source address increment unit size. */ uint32_t size : 2; /**< DMA transfer unit size. */ uint32_t dstInc : 2; /**< Destination address increment unit size. */ uint32_t srcAddrMode: 1; /**< Source addressing mode. */ uint32_t dstAddrMode: 1; /**< Destination addressing mode. */ uint32_t syncSet : 8; /**< Set bits in LDMA_CTRL.SYNCTRIG register. */ uint32_t syncClr : 8; /**< Clear bits in LDMA_CTRL.SYNCTRIG register*/ uint32_t reserved3 : 16; uint32_t matchVal : 8; /**< Sync trig match value. */ uint32_t matchEn : 8; /**< Sync trig match enable. */ uint32_t reserved4 : 16; uint32_t linkMode : 1; /**< Select absolute or relative link address.*/ uint32_t link : 1; /**< Enable LINKLOAD when transfer is done. */ int32_t linkAddr : 30; /**< Address of next (linked) descriptor. */ } sync; /** WRITE DMA descriptor, used for write immediate operations. */ struct { uint32_t structType : 2; /**< Set to 2 to select WRITE descriptor type.*/ uint32_t reserved0 : 1; uint32_t structReq : 1; /**< DMA transfer trigger during LINKLOAD. */ uint32_t xferCnt : 11; /**< Transfer count minus one. */ uint32_t byteSwap : 1; /**< Enable byte swapping transfers. */ uint32_t blockSize : 4; /**< Number of unit transfers per arb. cycle. */ uint32_t doneIfs : 1; /**< Generate interrupt when done. */ uint32_t reqMode : 1; /**< Block or cycle transfer selector. */ uint32_t decLoopCnt : 1; /**< Enable looped transfers. */ uint32_t ignoreSrec : 1; /**< Ignore single requests. */ uint32_t srcInc : 2; /**< Source address increment unit size. */ uint32_t size : 2; /**< DMA transfer unit size. */ uint32_t dstInc : 2; /**< Destination address increment unit size. */ uint32_t srcAddrMode: 1; /**< Source addressing mode. */ uint32_t dstAddrMode: 1; /**< Destination addressing mode. */ uint32_t immVal; /**< Data to be written at dstAddr. */ uint32_t dstAddr; /**< DMA write destination address. */ uint32_t linkMode : 1; /**< Select absolute or relative link address.*/ uint32_t link : 1; /**< Enable LINKLOAD when transfer is done. */ int32_t linkAddr : 30; /**< Address of next (linked) descriptor. */ } wri; } LDMA_Descriptor_t; /** @brief LDMA initialization configuration structure. */ typedef struct { uint8_t ldmaInitCtrlNumFixed; /**< Arbitration mode separator.*/ uint8_t ldmaInitCtrlSyncPrsClrEn; /**< PRS Synctrig clear enable. */ uint8_t ldmaInitCtrlSyncPrsSetEn; /**< PRS Synctrig set enable. */ uint8_t ldmaInitIrqPriority; /**< LDMA IRQ priority (0..7). */ } LDMA_Init_t; /** * @brief * DMA transfer configuration structure. * @details * This struct configures all aspects of a DMA transfer. */ typedef struct { uint32_t ldmaReqSel; /**< Selects DMA trigger source. */ uint8_t ldmaCtrlSyncPrsClrOff; /**< PRS Synctrig clear enables to clear. */ uint8_t ldmaCtrlSyncPrsClrOn; /**< PRS Synctrig clear enables to set. */ uint8_t ldmaCtrlSyncPrsSetOff; /**< PRS Synctrig set enables to clear. */ uint8_t ldmaCtrlSyncPrsSetOn; /**< PRS Synctrig set enables to set. */ bool ldmaReqDis; /**< Mask the PRS trigger input. */ bool ldmaDbgHalt; /**< Dis. DMA trig when cpu is halted. */ uint8_t ldmaCfgArbSlots; /**< Arbitration slot number. */ uint8_t ldmaCfgSrcIncSign; /**< Source addr. increment sign. */ uint8_t ldmaCfgDstIncSign; /**< Dest. addr. increment sign. */ uint8_t ldmaLoopCnt; /**< Counter for looped transfers. */ } LDMA_TransferCfg_t; /******************************************************************************* ************************** STRUCT INITIALIZERS **************************** ******************************************************************************/ /** @brief Default DMA initialization structure. */ #define LDMA_INIT_DEFAULT \ { \ .ldmaInitCtrlNumFixed = _LDMA_CTRL_NUMFIXED_DEFAULT, /* Fixed priority arbitration. */ \ .ldmaInitCtrlSyncPrsClrEn = 0, /* No PRS Synctrig clear enable*/ \ .ldmaInitCtrlSyncPrsSetEn = 0, /* No PRS Synctrig set enable. */ \ .ldmaInitIrqPriority = 3 /* IRQ priority level 3. */ \ } /** * @brief * Generic DMA transfer configuration for memory to memory transfers. */ #define LDMA_TRANSFER_CFG_MEMORY() \ { \ 0, 0, 0, 0, 0, \ false, false, ldmaCfgArbSlotsAs1, \ ldmaCfgSrcIncSignPos, ldmaCfgDstIncSignPos, 0 \ } /** * @brief * Generic DMA transfer configuration for looped memory to memory transfers. */ #define LDMA_TRANSFER_CFG_MEMORY_LOOP( loopCnt) \ { \ 0, 0, 0, 0, 0, \ false, false, ldmaCfgArbSlotsAs1, \ ldmaCfgSrcIncSignPos, ldmaCfgDstIncSignPos, \ loopCnt \ } /** * @brief * Generic DMA transfer configuration for memory to/from peripheral transfers. */ #define LDMA_TRANSFER_CFG_PERIPHERAL( signal ) \ { \ signal, 0, 0, 0, 0, \ false, false, ldmaCfgArbSlotsAs1, \ ldmaCfgSrcIncSignPos, ldmaCfgDstIncSignPos, 0 \ } /** * @brief * Generic DMA transfer configuration for looped memory to/from peripheral transfers. */ #define LDMA_TRANSFER_CFG_PERIPHERAL_LOOP( signal, loopCnt ) \ { \ signal, 0, 0, 0, 0, \ false, false, ldmaCfgArbSlotsAs1, \ ldmaCfgSrcIncSignPos, ldmaCfgDstIncSignPos, loopCnt \ } /** * @brief * DMA descriptor initializer for single memory to memory word transfer. * @param[in] src Source data address. * @param[in] dest Destination data address. * @param[in] count Number of words to transfer. */ #define LDMA_DESCRIPTOR_SINGLE_M2M_WORD( src, dest, count ) \ { \ .xfer = \ { \ .structType = ldmaCtrlStructTypeXfer, \ .structReq = 1, \ .xferCnt = ( count ) - 1, \ .byteSwap = 0, \ .blockSize = ldmaCtrlBlockSizeUnit1, \ .doneIfs = 1, \ .reqMode = ldmaCtrlReqModeAll, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = ldmaCtrlSrcIncOne, \ .size = ldmaCtrlSizeWord, \ .dstInc = ldmaCtrlDstIncOne, \ .srcAddrMode = ldmaCtrlSrcAddrModeAbs, \ .dstAddrMode = ldmaCtrlDstAddrModeAbs, \ .srcAddr = (uint32_t)(src), \ .dstAddr = (uint32_t)(dest), \ .linkMode = 0, \ .link = 0, \ .linkAddr = 0 \ } \ } /** * @brief * DMA descriptor initializer for single memory to memory half-word transfer. * @param[in] src Source data address. * @param[in] dest Destination data address. * @param[in] count Number of half-words to transfer. */ #define LDMA_DESCRIPTOR_SINGLE_M2M_HALF( src, dest, count ) \ { \ .xfer = \ { \ .structType = ldmaCtrlStructTypeXfer, \ .structReq = 1, \ .xferCnt = ( count ) - 1, \ .byteSwap = 0, \ .blockSize = ldmaCtrlBlockSizeUnit1, \ .doneIfs = 1, \ .reqMode = ldmaCtrlReqModeAll, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = ldmaCtrlSrcIncOne, \ .size = ldmaCtrlSizeHalf, \ .dstInc = ldmaCtrlDstIncOne, \ .srcAddrMode = ldmaCtrlSrcAddrModeAbs, \ .dstAddrMode = ldmaCtrlDstAddrModeAbs, \ .srcAddr = (uint32_t)(src), \ .dstAddr = (uint32_t)(dest), \ .linkMode = 0, \ .link = 0, \ .linkAddr = 0 \ } \ } /** * @brief * DMA descriptor initializer for single memory to memory byte transfer. * @param[in] src Source data address. * @param[in] dest Destination data address. * @param[in] count Number of bytes to transfer. */ #define LDMA_DESCRIPTOR_SINGLE_M2M_BYTE( src, dest, count ) \ { \ .xfer = \ { \ .structType = ldmaCtrlStructTypeXfer, \ .structReq = 1, \ .xferCnt = ( count ) - 1, \ .byteSwap = 0, \ .blockSize = ldmaCtrlBlockSizeUnit1, \ .doneIfs = 1, \ .reqMode = ldmaCtrlReqModeAll, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = ldmaCtrlSrcIncOne, \ .size = ldmaCtrlSizeByte, \ .dstInc = ldmaCtrlDstIncOne, \ .srcAddrMode = ldmaCtrlSrcAddrModeAbs, \ .dstAddrMode = ldmaCtrlDstAddrModeAbs, \ .srcAddr = (uint32_t)(src), \ .dstAddr = (uint32_t)(dest), \ .linkMode = 0, \ .link = 0, \ .linkAddr = 0 \ } \ } /** * @brief * DMA descriptor initializer for linked memory to memory word transfer. * * The link address must be an absolute address. * @note * The linkAddr member of the transfer descriptor is not * initialized. * @param[in] src Source data address. * @param[in] dest Destination data address. * @param[in] count Number of words to transfer. */ #define LDMA_DESCRIPTOR_LINKABS_M2M_WORD( src, dest, count ) \ { \ .xfer = \ { \ .structType = ldmaCtrlStructTypeXfer, \ .structReq = 1, \ .xferCnt = ( count ) - 1, \ .byteSwap = 0, \ .blockSize = ldmaCtrlBlockSizeUnit1, \ .doneIfs = 0, \ .reqMode = ldmaCtrlReqModeAll, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = ldmaCtrlSrcIncOne, \ .size = ldmaCtrlSizeWord, \ .dstInc = ldmaCtrlDstIncOne, \ .srcAddrMode = ldmaCtrlSrcAddrModeAbs, \ .dstAddrMode = ldmaCtrlDstAddrModeAbs, \ .srcAddr = (uint32_t)(src), \ .dstAddr = (uint32_t)(dest), \ .linkMode = ldmaLinkModeAbs, \ .link = 1, \ .linkAddr = 0 /* Must be set runtime ! */ \ } \ } /** * @brief * DMA descriptor initializer for linked memory to memory half-word transfer. * * The link address must be an absolute address. * @note * The linkAddr member of the transfer descriptor is not * initialized. * @param[in] src Source data address. * @param[in] dest Destination data address. * @param[in] count Number of half-words to transfer. */ #define LDMA_DESCRIPTOR_LINKABS_M2M_HALF( src, dest, count ) \ { \ .xfer = \ { \ .structType = ldmaCtrlStructTypeXfer, \ .structReq = 1, \ .xferCnt = ( count ) - 1, \ .byteSwap = 0, \ .blockSize = ldmaCtrlBlockSizeUnit1, \ .doneIfs = 0, \ .reqMode = ldmaCtrlReqModeAll, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = ldmaCtrlSrcIncOne, \ .size = ldmaCtrlSizeHalf, \ .dstInc = ldmaCtrlDstIncOne, \ .srcAddrMode = ldmaCtrlSrcAddrModeAbs, \ .dstAddrMode = ldmaCtrlDstAddrModeAbs, \ .srcAddr = (uint32_t)(src), \ .dstAddr = (uint32_t)(dest), \ .linkMode = ldmaLinkModeAbs, \ .link = 1, \ .linkAddr = 0 /* Must be set runtime ! */ \ } \ } /** * @brief * DMA descriptor initializer for linked memory to memory byte transfer. * * The link address must be an absolute address. * @note * The linkAddr member of the transfer descriptor is not * initialized. * @param[in] src Source data address. * @param[in] dest Destination data address. * @param[in] count Number of bytes to transfer. */ #define LDMA_DESCRIPTOR_LINKABS_M2M_BYTE( src, dest, count ) \ { \ .xfer = \ { \ .structType = ldmaCtrlStructTypeXfer, \ .structReq = 1, \ .xferCnt = ( count ) - 1, \ .byteSwap = 0, \ .blockSize = ldmaCtrlBlockSizeUnit1, \ .doneIfs = 0, \ .reqMode = ldmaCtrlReqModeAll, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = ldmaCtrlSrcIncOne, \ .size = ldmaCtrlSizeByte, \ .dstInc = ldmaCtrlDstIncOne, \ .srcAddrMode = ldmaCtrlSrcAddrModeAbs, \ .dstAddrMode = ldmaCtrlDstAddrModeAbs, \ .srcAddr = (uint32_t)(src), \ .dstAddr = (uint32_t)(dest), \ .linkMode = ldmaLinkModeAbs, \ .link = 1, \ .linkAddr = 0 /* Must be set runtime ! */ \ } \ } /** * @brief * DMA descriptor initializer for linked memory to memory word transfer. * * The link address is a relative address. * @note * The linkAddr member of the transfer descriptor is * initialized to 4, assuming that the next descriptor immediately follows * this descriptor (in memory). * @param[in] src Source data address. * @param[in] dest Destination data address. * @param[in] count Number of words to transfer. * @param[in] linkjmp Address of descriptor to link to expressed as a * signed number of descriptors from "here". * 1=one descriptor forward in memory, * 0=one this descriptor, * -1=one descriptor back in memory. */ #define LDMA_DESCRIPTOR_LINKREL_M2M_WORD( src, dest, count, linkjmp ) \ { \ .xfer = \ { \ .structType = ldmaCtrlStructTypeXfer, \ .structReq = 1, \ .xferCnt = ( count ) - 1, \ .byteSwap = 0, \ .blockSize = ldmaCtrlBlockSizeUnit1, \ .doneIfs = 0, \ .reqMode = ldmaCtrlReqModeAll, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = ldmaCtrlSrcIncOne, \ .size = ldmaCtrlSizeWord, \ .dstInc = ldmaCtrlDstIncOne, \ .srcAddrMode = ldmaCtrlSrcAddrModeAbs, \ .dstAddrMode = ldmaCtrlDstAddrModeAbs, \ .srcAddr = (uint32_t)(src), \ .dstAddr = (uint32_t)(dest), \ .linkMode = ldmaLinkModeRel, \ .link = 1, \ .linkAddr = ( linkjmp ) * 4 \ } \ } /** * @brief * DMA descriptor initializer for linked memory to memory half-word transfer. * * The link address is a relative address. * @note * The linkAddr member of the transfer descriptor is * initialized to 4, assuming that the next descriptor immediately follows * this descriptor (in memory). * @param[in] src Source data address. * @param[in] dest Destination data address. * @param[in] count Number of half-words to transfer. * @param[in] linkjmp Address of descriptor to link to expressed as a * signed number of descriptors from "here". * 1=one descriptor forward in memory, * 0=one this descriptor, * -1=one descriptor back in memory. */ #define LDMA_DESCRIPTOR_LINKREL_M2M_HALF( src, dest, count, linkjmp ) \ { \ .xfer = \ { \ .structType = ldmaCtrlStructTypeXfer, \ .structReq = 1, \ .xferCnt = ( count ) - 1, \ .byteSwap = 0, \ .blockSize = ldmaCtrlBlockSizeUnit1, \ .doneIfs = 0, \ .reqMode = ldmaCtrlReqModeAll, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = ldmaCtrlSrcIncOne, \ .size = ldmaCtrlSizeHalf, \ .dstInc = ldmaCtrlDstIncOne, \ .srcAddrMode = ldmaCtrlSrcAddrModeAbs, \ .dstAddrMode = ldmaCtrlDstAddrModeAbs, \ .srcAddr = (uint32_t)(src), \ .dstAddr = (uint32_t)(dest), \ .linkMode = ldmaLinkModeRel, \ .link = 1, \ .linkAddr = ( linkjmp ) * 4 \ } \ } /** * @brief * DMA descriptor initializer for linked memory to memory byte transfer. * * The link address is a relative address. * @note * The linkAddr member of the transfer descriptor is * initialized to 4, assuming that the next descriptor immediately follows * this descriptor (in memory). * @param[in] src Source data address. * @param[in] dest Destination data address. * @param[in] count Number of bytes to transfer. * @param[in] linkjmp Address of descriptor to link to expressed as a * signed number of descriptors from "here". * 1=one descriptor forward in memory, * 0=one this descriptor, * -1=one descriptor back in memory. */ #define LDMA_DESCRIPTOR_LINKREL_M2M_BYTE( src, dest, count, linkjmp ) \ { \ .xfer = \ { \ .structType = ldmaCtrlStructTypeXfer, \ .structReq = 1, \ .xferCnt = ( count ) - 1, \ .byteSwap = 0, \ .blockSize = ldmaCtrlBlockSizeUnit1, \ .doneIfs = 0, \ .reqMode = ldmaCtrlReqModeAll, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = ldmaCtrlSrcIncOne, \ .size = ldmaCtrlSizeByte, \ .dstInc = ldmaCtrlDstIncOne, \ .srcAddrMode = ldmaCtrlSrcAddrModeAbs, \ .dstAddrMode = ldmaCtrlDstAddrModeAbs, \ .srcAddr = (uint32_t)(src), \ .dstAddr = (uint32_t)(dest), \ .linkMode = ldmaLinkModeRel, \ .link = 1, \ .linkAddr = ( linkjmp ) * 4 \ } \ } /** * @brief * DMA descriptor initializer for byte transfers from a peripheral to memory. * @param[in] src Peripheral data source register address. * @param[in] dest Destination data address. * @param[in] count Number of bytes to transfer. */ #define LDMA_DESCRIPTOR_SINGLE_P2M_BYTE( src, dest, count ) \ { \ .xfer = \ { \ .structType = ldmaCtrlStructTypeXfer, \ .structReq = 0, \ .xferCnt = ( count ) - 1, \ .byteSwap = 0, \ .blockSize = ldmaCtrlBlockSizeUnit1, \ .doneIfs = 1, \ .reqMode = ldmaCtrlReqModeBlock, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = ldmaCtrlSrcIncNone, \ .size = ldmaCtrlSizeByte, \ .dstInc = ldmaCtrlDstIncOne, \ .srcAddrMode = ldmaCtrlSrcAddrModeAbs, \ .dstAddrMode = ldmaCtrlDstAddrModeAbs, \ .srcAddr = (uint32_t)(src), \ .dstAddr = (uint32_t)(dest), \ .linkMode = 0, \ .link = 0, \ .linkAddr = 0 \ } \ } /** * @brief * DMA descriptor initializer for byte transfers from memory to a peripheral * @param[in] src Source data address. * @param[in] dest Peripheral data register destination address. * @param[in] count Number of bytes to transfer. */ #define LDMA_DESCRIPTOR_SINGLE_M2P_BYTE( src, dest, count ) \ { \ .xfer = \ { \ .structType = ldmaCtrlStructTypeXfer, \ .structReq = 0, \ .xferCnt = ( count ) - 1, \ .byteSwap = 0, \ .blockSize = ldmaCtrlBlockSizeUnit1, \ .doneIfs = 1, \ .reqMode = ldmaCtrlReqModeBlock, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = ldmaCtrlSrcIncOne, \ .size = ldmaCtrlSizeByte, \ .dstInc = ldmaCtrlDstIncNone, \ .srcAddrMode = ldmaCtrlSrcAddrModeAbs, \ .dstAddrMode = ldmaCtrlDstAddrModeAbs, \ .srcAddr = (uint32_t)(src), \ .dstAddr = (uint32_t)(dest), \ .linkMode = 0, \ .link = 0, \ .linkAddr = 0 \ } \ } /** * @brief * DMA descriptor initializer for byte transfers from a peripheral to memory. * @param[in] src Peripheral data source register address. * @param[in] dest Destination data address. * @param[in] count Number of bytes to transfer. * @param[in] linkjmp Address of descriptor to link to expressed as a * signed number of descriptors from "here". * 1=one descriptor forward in memory, * 0=one this descriptor, * -1=one descriptor back in memory. */ #define LDMA_DESCRIPTOR_LINKREL_P2M_BYTE( src, dest, count, linkjmp ) \ { \ .xfer = \ { \ .structType = ldmaCtrlStructTypeXfer, \ .structReq = 0, \ .xferCnt = ( count ) - 1, \ .byteSwap = 0, \ .blockSize = ldmaCtrlBlockSizeUnit1, \ .doneIfs = 1, \ .reqMode = ldmaCtrlReqModeBlock, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = ldmaCtrlSrcIncNone, \ .size = ldmaCtrlSizeByte, \ .dstInc = ldmaCtrlDstIncOne, \ .srcAddrMode = ldmaCtrlSrcAddrModeAbs, \ .dstAddrMode = ldmaCtrlDstAddrModeAbs, \ .srcAddr = (uint32_t)(src), \ .dstAddr = (uint32_t)(dest), \ .linkMode = ldmaLinkModeRel, \ .link = 1, \ .linkAddr = ( linkjmp ) * 4 \ } \ } /** * @brief * DMA descriptor initializer for byte transfers from memory to a peripheral * @param[in] src Source data address. * @param[in] dest Peripheral data register destination address. * @param[in] count Number of bytes to transfer. * @param[in] linkjmp Address of descriptor to link to expressed as a * signed number of descriptors from "here". * 1=one descriptor forward in memory, * 0=one this descriptor, * -1=one descriptor back in memory. */ #define LDMA_DESCRIPTOR_LINKREL_M2P_BYTE( src, dest, count, linkjmp ) \ { \ .xfer = \ { \ .structType = ldmaCtrlStructTypeXfer, \ .structReq = 0, \ .xferCnt = ( count ) - 1, \ .byteSwap = 0, \ .blockSize = ldmaCtrlBlockSizeUnit1, \ .doneIfs = 1, \ .reqMode = ldmaCtrlReqModeBlock, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = ldmaCtrlSrcIncOne, \ .size = ldmaCtrlSizeByte, \ .dstInc = ldmaCtrlDstIncNone, \ .srcAddrMode = ldmaCtrlSrcAddrModeAbs, \ .dstAddrMode = ldmaCtrlDstAddrModeAbs, \ .srcAddr = (uint32_t)(src), \ .dstAddr = (uint32_t)(dest), \ .linkMode = ldmaLinkModeRel, \ .link = 1, \ .linkAddr = ( linkjmp ) * 4 \ } \ } /** * @brief * DMA descriptor initializer for Immediate WRITE transfer * @param[in] value Immediate value to write. * @param[in] address Write sddress. */ #define LDMA_DESCRIPTOR_SINGLE_WRITE( value, address ) \ { \ .wri = \ { \ .structType = ldmaCtrlStructTypeWrite, \ .structReq = 1, \ .xferCnt = 0, \ .byteSwap = 0, \ .blockSize = 0, \ .doneIfs = 1, \ .reqMode = 0, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = 0, \ .size = 0, \ .dstInc = 0, \ .srcAddrMode = 0, \ .dstAddrMode = 0, \ .immVal = (value), \ .dstAddr = (uint32_t)(address), \ .linkMode = 0, \ .link = 0, \ .linkAddr = 0 \ } \ } /** * @brief * DMA descriptor initializer for Immediate WRITE transfer * * The link address must be an absolute address. * @note * The linkAddr member of the transfer descriptor is not * initialized. * @param[in] value Immediate value to write. * @param[in] address Write sddress. */ #define LDMA_DESCRIPTOR_LINKABS_WRITE( value, address ) \ { \ .wri = \ { \ .structType = ldmaCtrlStructTypeWrite, \ .structReq = 1, \ .xferCnt = 0, \ .byteSwap = 0, \ .blockSize = 0, \ .doneIfs = 0, \ .reqMode = 0, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = 0, \ .size = 0, \ .dstInc = 0, \ .srcAddrMode = 0, \ .dstAddrMode = 0, \ .immVal = (value), \ .dstAddr = (uint32_t)(address), \ .linkMode = ldmaLinkModeAbs, \ .link = 1, \ .linkAddr = 0 /* Must be set runtime ! */ \ } \ } /** * @brief * DMA descriptor initializer for Immediate WRITE transfer * @param[in] value Immediate value to write. * @param[in] address Write sddress. * @param[in] linkjmp Address of descriptor to link to expressed as a * signed number of descriptors from "here". * 1=one descriptor forward in memory, * 0=one this descriptor, * -1=one descriptor back in memory. */ #define LDMA_DESCRIPTOR_LINKREL_WRITE( value, address, linkjmp ) \ { \ .wri = \ { \ .structType = ldmaCtrlStructTypeWrite, \ .structReq = 1, \ .xferCnt = 0, \ .byteSwap = 0, \ .blockSize = 0, \ .doneIfs = 0, \ .reqMode = 0, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = 0, \ .size = 0, \ .dstInc = 0, \ .srcAddrMode = 0, \ .dstAddrMode = 0, \ .immVal = (value), \ .dstAddr = (uint32_t)(address), \ .linkMode = ldmaLinkModeRel, \ .link = 1, \ .linkAddr = ( linkjmp ) * 4 \ } \ } /** * @brief * DMA descriptor initializer for SYNC transfer * @param[in] set Sync pattern bits to set. * @param[in] clr Sync pattern bits to clear. * @param[in] matchValue Sync pattern to match. * @param[in] matchEnable Sync pattern bits to enable for match. */ #define LDMA_DESCRIPTOR_SINGLE_SYNC( set, clr, matchValue, matchEnable ) \ { \ .sync = \ { \ .structType = ldmaCtrlStructTypeSync, \ .structReq = 1, \ .xferCnt = 0, \ .byteSwap = 0, \ .blockSize = 0, \ .doneIfs = 1, \ .reqMode = 0, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = 0, \ .size = 0, \ .dstInc = 0, \ .srcAddrMode = 0, \ .dstAddrMode = 0, \ .syncSet = (set), \ .syncClr = (clr), \ .matchVal = (matchValue), \ .matchEn = (matchEnable), \ .linkMode = 0, \ .link = 0, \ .linkAddr = 0 \ } \ } /** * @brief * DMA descriptor initializer for SYNC transfer * * The link address must be an absolute address. * @note * The linkAddr member of the transfer descriptor is not * initialized. * @param[in] set Sync pattern bits to set. * @param[in] clr Sync pattern bits to clear. * @param[in] matchValue Sync pattern to match. * @param[in] matchEnable Sync pattern bits to enable for match. */ #define LDMA_DESCRIPTOR_LINKABS_SYNC( set, clr, matchValue, matchEnable ) \ { \ .sync = \ { \ .structType = ldmaCtrlStructTypeSync, \ .structReq = 1, \ .xferCnt = 0, \ .byteSwap = 0, \ .blockSize = 0, \ .doneIfs = 0, \ .reqMode = 0, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = 0, \ .size = 0, \ .dstInc = 0, \ .srcAddrMode = 0, \ .dstAddrMode = 0, \ .syncSet = (set), \ .syncClr = (clr), \ .matchVal = (matchValue), \ .matchEn = (matchEnable), \ .linkMode = ldmaLinkModeAbs, \ .link = 1, \ .linkAddr = 0 /* Must be set runtime ! */ \ } \ } /** * @brief * DMA descriptor initializer for SYNC transfer * @param[in] set Sync pattern bits to set. * @param[in] clr Sync pattern bits to clear. * @param[in] matchValue Sync pattern to match. * @param[in] matchEnable Sync pattern bits to enable for match. * @param[in] linkjmp Address of descriptor to link to expressed as a * signed number of descriptors from "here". * 1=one descriptor forward in memory, * 0=one this descriptor, * -1=one descriptor back in memory. */ #define LDMA_DESCRIPTOR_LINKREL_SYNC( set, clr, matchValue, matchEnable, linkjmp ) \ { \ .sync = \ { \ .structType = ldmaCtrlStructTypeSync, \ .structReq = 1, \ .xferCnt = 0, \ .byteSwap = 0, \ .blockSize = 0, \ .doneIfs = 0, \ .reqMode = 0, \ .decLoopCnt = 0, \ .ignoreSrec = 0, \ .srcInc = 0, \ .size = 0, \ .dstInc = 0, \ .srcAddrMode = 0, \ .dstAddrMode = 0, \ .syncSet = (set), \ .syncClr = (clr), \ .matchVal = (matchValue), \ .matchEn = (matchEnable), \ .linkMode = ldmaLinkModeRel, \ .link = 1, \ .linkAddr = ( linkjmp ) * 4 \ } \ } /******************************************************************************* ***************************** PROTOTYPES ********************************** ******************************************************************************/ void LDMA_DeInit( void ); void LDMA_Init( LDMA_Init_t *init ); void LDMA_StartTransfer( int ch, LDMA_TransferCfg_t *transfer, LDMA_Descriptor_t *descriptor ); void LDMA_StopTransfer( int ch ); bool LDMA_TransferDone( int ch ); uint32_t LDMA_TransferRemainingCount( int ch ); /***************************************************************************//** * @brief * Clear one or more pending LDMA interrupts. * * @param[in] flags * Pending LDMA interrupt sources to clear. Use one or more valid * interrupt flags for the LDMA module (LDMA_IFC_nnn). ******************************************************************************/ __STATIC_INLINE void LDMA_IntClear(uint32_t flags) { LDMA->IFC = flags; } /***************************************************************************//** * @brief * Disable one or more LDMA interrupts. * * @param[in] flags * LDMA interrupt sources to disable. Use one or more valid * interrupt flags for the LDMA module (LDMA_IEN_nnn). ******************************************************************************/ __STATIC_INLINE void LDMA_IntDisable(uint32_t flags) { LDMA->IEN &= ~flags; } /***************************************************************************//** * @brief * Enable one or more LDMA interrupts. * * @note * Depending on the use, a pending interrupt may already be set prior to * enabling the interrupt. Consider using LDMA_IntClear() prior to enabling * if such a pending interrupt should be ignored. * * @param[in] flags * LDMA interrupt sources to enable. Use one or more valid * interrupt flags for the LDMA module (LDMA_IEN_nnn). ******************************************************************************/ __STATIC_INLINE void LDMA_IntEnable(uint32_t flags) { LDMA->IEN |= flags; } /***************************************************************************//** * @brief * Get pending LDMA interrupt flags. * * @note * The event bits are not cleared by the use of this function. * * @return * LDMA interrupt sources pending. Returns one or more valid * interrupt flags for the LDMA module (LDMA_IF_nnn). ******************************************************************************/ __STATIC_INLINE uint32_t LDMA_IntGet(void) { return LDMA->IF; } /***************************************************************************//** * @brief * Get enabled and pending LDMA interrupt flags. * Useful for handling more interrupt sources in the same interrupt handler. * * @note * Interrupt flags are not cleared by the use of this function. * * @return * Pending and enabled LDMA interrupt sources * The return value is the bitwise AND of * - the enabled interrupt sources in LDMA_IEN and * - the pending interrupt flags LDMA_IF ******************************************************************************/ __STATIC_INLINE uint32_t LDMA_IntGetEnabled(void) { uint32_t ien; ien = LDMA->IEN; return LDMA->IF & ien; } /***************************************************************************//** * @brief * Set one or more pending LDMA interrupts * * @param[in] flags * LDMA interrupt sources to set to pending. Use one or more valid * interrupt flags for the LDMA module (LDMA_IFS_nnn). ******************************************************************************/ __STATIC_INLINE void LDMA_IntSet(uint32_t flags) { LDMA->IFS = flags; } /** @} (end addtogroup LDMA) */ /** @} (end addtogroup EM_Library) */ #ifdef __cplusplus } #endif #endif /* defined( LDMA_PRESENT ) && ( LDMA_COUNT == 1 ) */ #endif /* __SILICON_LABS_EM_LDMA_H__ */